The data set in the table represents the profit for a fundraiser based on the cost of tickets to the event. What is the equation in standard form of the quadratic function? What ticket cost
should be used to raise the most money?

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Solve for the equation. 4x - 13 = 2x + 9

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq less than 132. the probability that a randomly selected adult has an iq less than 132 is?